44328440621 has 2 divisors, whose sum is σ = 44328440622. Its totient is φ = 44328440620.

The previous prime is 44328440609. The next prime is 44328440641. The reversal of 44328440621 is 12604482344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25177755625 + 19150684996 = 158675^2 + 138386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44328440621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44328440641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22164220310 + 22164220311.

It is an arithmetic number, because the mean of its divisors is an integer number (22164220311).

Almost surely, 2^44328440621 is an apocalyptic number.

It is an amenable number.

44328440621 is a deficient number, since it is larger than the sum of its proper divisors (1).

44328440621 is an equidigital number, since it uses as much as digits as its factorization.

44328440621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 38.

The spelling of 44328440621 in words is "forty-four billion, three hundred twenty-eight million, four hundred forty thousand, six hundred twenty-one".